Make test pass with Rails 4
Cleaning : remove useless logic for dynamic finders which have been removed in Rails4
Restore attr_accessible if gem protected_attribute present
ActiveRecord 4 compatibility :

- Move test to a specific file (active_record_integration_test)
- Add some tests
- Fix integration issue using QueryMethods (based on Globalize version)
- Add page model for failing test when the origin table has a field in the DB for a translated attribute (ie: table `pages` have column `title`)